Crankshaft Position Sensor (Pos)

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Loosen the fixing bolt of the sensor.
Disconnect crankshaft position sensor (POS) harness connector.
Remove the sensor. Refer to INTAKE VALVE TIMING CONTROL POSITION SENSOR (LH) .
Visually check the sensor for chipping.

Fig 1: Inspecting Crankshaft Position Sensor
Courtesy of NISSAN NORTH AMERICA, INC.

Check resistance as shown in the figure below.

Terminal No. (Polarity)	Resistance Ω [at 25°C (77°F)]
1 (+) - 2 (-)	Except 0 or ∞
1 (+) - 3 (-)
2 (+) - 3 (-)

Fig 2: Checking Resistance Between Crankshaft Position Sensor Terminals

Courtesy of NISSAN NORTH AMERICA, INC.